Packing device for pipe joints



s. J. sm-:NN'oN IACKING DEVICE FOR PIPE JOINTS l '-Feb. 19, 1929.

Filed Jan. 29, 1926 Y vwd/W *Patented Feb. 19, 1929.'

1,703,018 'PATENT orner.

Y SMOJOSEFH STIENON, OF SERAJJVG SUB, MEUSE, NEAR LIEGE, BELGIUM.

APAGXING DEVICE FOR PIPE JOINTS.

Application mea January 29, 192e, serial-no. 84,670, and in Belgium rem-nary 2, 1925.

. The present invention relates to improvements in packing devices for pipe ]o1nts,-m

iWhich the tightness is obtained by fluid pres.

sure acting upon a desired number of pack- 5 ings, whereby said packings are pressed against the adjoining face or faces.

It is evidentv that the necessary pressure may be produced by the fluid, the escapement of which is to be obviated, or by means of a lo' compressedl fluid taken from an independent source.

The principal object ot the present invenA tion-consists in that the packing or paclrin'gs are constituted each by a simple -thin strip or 15 strips of compressible material, for instance 'of leather, hemp, india rubber, compressed'as-- bestos, lead, copper or any other suitable compressible material, the ends of such strip bev ing out to any suitable shape as illustrated in Figures l, 2 and 3', so as to be in overlapping contact in actual use. l

The great advantages of such strips, as dise tinguished from the endlessVv ring of com j press'ible material heretofore. used, are that vthey are very cheap of manufacture, easily obtained or made for any diameter of pipe, and make a smooth tight packing without the formation of folds or wrinkles, and th'ey can be applied `and removed without separating 3Q or in any manner moving either ofthe pipes of the joint, since.' in using them it is not necessary to Afit them over the end or ends of one or'both. of the pipes and move them endwise,

but it is easy to `merely wrap them around the pipe at the proper point or points in the usual packing groove or grooves.

With the foregoing and other objects in view which vwill .appear fromthe following xdescription, the invention resides in the com# 40l bination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that vchanges 'inthe precise embodiment of the invention can be made, without departing from the spirit of the invention.

In' the'accompa'n'ying drawings: l Figure 1 represents, in edge view and, in vside view, a packing according to my invention and comprising a single st-rip of c'om- ,50 p ressible material having its ends in contact' in overlapping relation'and out on a slantin an axial-direction; A Figure 2, similarviews of a slightly d1f ferent form of a' single-strip packing wherein 55 the overlapping ends are also in contact, butl beveledor c uton aslant excentrlc to 1ts ax1s;

Figure 3, an edge view of a further modification employing two strips arranged end to :enclin a circle with the ends of the one in conkccording to Figures l, 2 and 3 the packing pi 'iper consists of one or two simple and thin strips c, of any sutablecompressible materiah the extremities c1, c2 of such strips being Acut in such a form as in use to be in overlapping contact to constitute in operation an endless band having a smooth endless exterior face in contact at all points otits periphery with the opposed face ofthe sleeve e or by superposition (see Figures -2 and 3), or in any otherconvenient manner.

According to Figure 4.-, the adjacent end portions of pipes f and Z which are Vto be connected together, are provided each with a ixed circular flange d, each of said flanges being provided with a circular groove a, this Vlatter communicating through a passage I),

with the interior of the corresponding pipe.

.Each of the grooves contains a packing c (see Figures 1, 2) Said parts are enclosed by 'a cylindrical sleeve c, the whole being assembled by means of annular flanges g and bolts m. The compressed fluid within the piping 'presses the packings c against the cyation, the same as the form illustrated in Figure 4, except in the following respects..

Eachannular llangedof theV pipes f and lis provided with a plurality of circular grooves 'la in series, each of these grooves containing a packing c as in Figure 4. However, only one of thegrooves ,lan of this embodiment, the groove nearest the inner end of the corresponding flange, communicates directly with the interior .of its corresponding pipe through the passages b, the remaining grooves l k havingv communication, by passages b ex tending through' its radially inner wall and on a slant through the materiel of speld a'nge to a point between the particular groove c and the next adjacent groove nearer the inner end of the flange d, with the annular space between the outer' face of the particular flange d, the opposedinner face of the sleeve e, and the packing strips o respectively in said adjacent grooves 7c. Thus, any leakage of fluid which may work past an inner packing c is arrested bythe next adjacent packing c, said packings c being pressed, as operatively endless bands, by the radially outward expanding action of the compressed fluid against the opposed inner confining face of the removable sleeve c and, by virtue of their trans- 'verse expansion, also against the lateral faces of their respective grooves 7c.

The pipes f, Z may be assembled in the manner shown, that is to say, by means of flanges g and bolts m, or in any other well known manner.

In assembling the pipes, the sleeve e is first slid over and behind one of the flanges d.

Then the packing strip or strips c are wrapped about theflanges d in their respective grooves lo, the sleeve e being successively slid over the respective grooves has the wrapping therein of the respective packing strips c is accomplished, until the application ofthe packing strips c to the respective' grooves la of the re' spectivefianges d is completed, when said flanges d will be completely contained within the sleeve d, which serves to confine the packing strips c, as wrapped, in their respective grooves c. Thereafter the pipes are connected to each other by means of flanges g and bolts m, or equivalent means, as above mentioned. In the event of renewing the packing strips o, or one of them, the bolts m are unscrewed, and the sleeve e'is moved axially to uncover the groove or grooves lc wherein the packing is to be removed and replaced by new packing strips c, this being accomplished without any occasion to in any degree move or disturb either of the Apipes f and Z with relation to each other or to .any other part or mounting and of course after such renewal of packing is completed the sleeve e' is moved -aXiall to its normal position and the flanges q an bolts m are again connected and tightened up as before.

What I claim is:

1. A pipe joint comprising two pipes having their ends in adjacency, an annular flange arranged on each of the adjacent end portions of said pipes, each said flange being formed with an annular groove in its peripheral face and each said flange and its pipe being formed to permit direct communication between the interior of said pipe and the groove in said flange, a sleeve arranged about said pipes at their adjacent ends and presenting a smooth inner cylindrical wall in opposition to the peripheral faces of said flanges,

and means for confining said adjacent endv fining action of the cylindrical opposed inner face of said sleeve.

2. A pipe joint comprising two pipes yhaving their ends in adjacency, an annular flange arranged on each of the adjacent end portions of said pipes, a sleeve and means for confining said pipe end portions in said sleeve, each said flange being formed with a plurality of annular grooves in its peripheral face, each said flange and 'its -pipe being formed to permit direct communication between the interior of said pipe and one of said grooves, and said flange being formed to afford direct communication between the radially inner portions of each of the other of its grooves and theannular space between said flange and sleeve, and said sleeve presenting a smooth cylindrical wall in opposition to the peripheral faces of said flanges and acting to confine the packing in the respective grooves against radial expansion, in combination with packings-respectively arranged in the grooves of the respective flanges, each said packing comprising a split band of compressible material with overlapping ends having their opposed faces in contact and operatively presenting a continuous smooth peripheral face in uninterrupted contact with the opposing face of said sleeve at all points about the common axis of the respective flanges.

In testimony whereof, I have signed my name to this specification at Antwerp, Belgium, this 14th day of January, 1926.

SIMON JOSEPH STIENNON. 

